This invention relates to an analytical support containing a plurality of oligonucleotides fixed on this support, where each of the nucleotides is marked by a fluorescent compound that presents a variation of fluorescence on the hybridization of each marked oligonucleotide with at complementary oligonucleotide....http://www.google.com/patents/US6861515?utm_source=gb-gplus-sharePatent US6861515 - Analysis of biological targets using a biochip comprising a fluorescent marker